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Maintenance 12

Process Calibration

Prior to performing a process calibration, a reference meter and probe must be used (or another method) to 
determine DO value of the process.

Preparation

•  Determine the process DO value, using a calibrated reference meter and probe.
•  The process controller and the probe should have previously been calibrated with two standards (probe 

slope has been determined).

Procedure

1.  Press the 

key then 

CAL

 virtual key. 

2.  Press 

Process

 when it is displayed. 

3.  Use the 

ud

 keys to adjust the process value in agreement with the predetermined value. 

4.  Press 

CFM

 to confirm and save the calibration.

Note

: Process calibration evaluates probe offset if input is reading is less than 20%, or probe slope if values are 

over 20%.

12.  MAINTENANCE

General Maintenance

•  Inspect O-ring for nicks or other damage. Replacing the o ring is advised. 
•  Do not substitute other grease or lubricants as it may cause the O-ring to swell.
•  After long-term storage or cleaning, calibrate the probe.
•  After use, rinse the probe with tap water and dry it. 
•  The DO cap must be kept hydrated.

Cleaning the Smart Cap

•  Use a mild detergent and a soft-bristled toothbrush to clean. 
•  Rinse with water after cleaning and dry with a laboratory tissue.
•  Hydrate in purified water before use.

Note

: Smart Caps need to be replaced every year.

Smart Cap Replacement

•  When the cap approaches annual expiration, a warning screen notifies the user of required replacement.
•  Press 

direct key to read days remaining before expiration. 

•  When one year is reached the message will change to “Cap Expired”. To maintain measurement accuracy 

Smart Cap replacement is mandatory. 

Summary of Contents for HI7640-58

Page 1: ...nload the HI510 controller user manual https manuals hannainst com HI510 Hanna is committed to developing and deploying digital solutions with a positive impact on the environment and climate 0 to 50...

Page 2: ...essories 14 14 Abbreviations 14 Certification 15 Recommendations for Users 15 Warranty 15 Dear Customer Thank you for choosing a Hanna Instruments product Please read this instruction manual carefully...

Page 3: ...are all accessible inside controller s enclosure Before powering the controller verify the probe wiring has been done following the instructions detailed in this manual 3 GENERAL DESCRIPTION INTENDED...

Page 4: ...ed oxygen Over time the sensor s optical components can age but are compensated for by using the reference signal to compensate the measuring path As a result the sensor provides accurate dissolved ox...

Page 5: ...red by the user in saturation or mg L Temperature Range 5 0 to 50 0 C 23 0 to 122 0 F Resolution 0 1 C 0 1 F Accuracy 0 3 C 0 5 F Calibration Single point offset controller setting Temperature compens...

Page 6: ...Remove the protective cap 3 Locate the O ring that sits on probe body Sparingly lubricate with a thin film of supplied grease Use care to prevent grease fingerprints from contacting the optical window...

Page 7: ...stalled using the 3 4 NPT external threads Hand tighten the probe in position Then depending on the process tighten one or two turns with a wrench to secure in place Do not exceed 10 N m 7 3 lb ft tor...

Page 8: ...shing 5 attached to the probe E The upper portion of the pipe should be sealed step II to prevent ingress of water if installed outdoor F Attach the pipe to a handrail Low thread immersion installatio...

Page 9: ...temperature differences greater than 2 C 36 F between tank content and flow cell sample Shade the assembly from direct sunlight TANK VALVE 1 VALVE 2 FLOW FLOW INCOMING FLOW EXIT FLOW 3 1 2 4 5 7 6 6...

Page 10: ...de Marking Attached cable Patch cable Functionality GREEN BLACK 0V B WHITE WHITE RS485 D A YELLOW BLUE RS485 D BROWN RED 5V g GREEN YELLOW Protective ground connection See Accessories section for cabl...

Page 11: ...8 26 mg L suspend the probe in water saturated air This condition corresponds to 100 air saturated water at the temperature of measurement 1 Use of calibration beaker containing some water or moisten...

Page 12: ...lope if values are over 20 12 MAINTENANCE General Maintenance Inspect O ring for nicks or other damage Replacing the o ring is advised Do not substitute other grease or lubricants as it may cause the...

Page 13: ...e the new O ring from the container and slide on the probe tip do not roll or twist the O ring 8 Use a syringe filled with silicone grease and sparingly lubricate the O ring with a thin film of grease...

Page 14: ...10 m 32 9 HI76510 15 Patch cable 15 m 49 2 HI76510 25 Patch cable 25 m 82 HI76510 50 Patch cable 50 m 164 BL120 400 Flow cell probe adapter kit BL120 401 Flow cell valve BL120 402 Flow cell tubing 10...

Page 15: ...dous environments WARRANTY The probes are warrantied for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions HI764113 1 S...

Page 16: ......

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